Telemetry without collars: performance of fur- and ear-mounted satellite tags for evaluating the movement and behaviour of polar bears.

The study of animal movement provides insights into underlying ecological processes and informs analyses of behaviour and resource use, which have implications for species management and conservation. The tools used to study animal movement have evolved over the past decades, allowing for data collection from a variety of species, including those living in remote environments. Satellite-linked radio and GPS collars have been used to study polar bear (Ursus maritimus) ecology and movements throughout the circumpolar Arctic for over 50 years. However, due to morphology and growth constraints, only adult female polar bears can be reliably collared. Collars have proven to be safe, but there has been opposition to their use, resulting in a deficiency in data across much of the species' range. To bolster knowledge of movement characteristics and behaviours for polar bears other than adult females, while also providing an alternative to collars, we tested the use of fur- and ear-mounted telemetry tags that can be affixed to polar bears of any sex and age. We tested three fur tag designs (SeaTrkr, tribrush and pentagon tags), which we affixed to 15 adult and 1 subadult male polar bears along the coast of Hudson Bay during August-September 2021-2022. Fur tags were compared with ear tags deployed on 42 subadult and adult male polar bears captured on the coast or the sea ice between 2016 and 2022. We used data from the tags to quantify the amount of time subadult and adult males spent resting versus traveling while on land. Our results show the three fur tag designs remained functional for shorter mean durations (SeaTrkr = 58 days; tribrush = 47 days; pentagon = 22 days) than ear tags (121 days), but positional error estimates were comparable among the Argos-equipped tags. The GPS/Iridium-equipped SeaTrkr fur tags provided higher resolution and more frequent location data. Combined, the tags provided sufficient data to model different behavioural states. Furthermore, as hypothesized, subadult and adult male polar bears spent the majority of their time resting while on land, increasing time spent traveling as temperatures cooled. Fur tags show promise as a short-term means of collecting movement data from free-ranging polar bears. Supplementary Information: The online version contains supplementary material available at 10.1186/s40317-024-00373-2.

Evaluation of the Learning to Integrate Neighborhoods and Clinical Care Project: Findings from Implementing a New Lay Role into Primary Care Teams to Address Social Determinants of Health.

INTRODUCTION: Health systems increasingly recognize the impact of social determinants of health such as access to housing, transportation, and nutritious food. Lay health workers have been used to address patients' social determinants of health through resource referral and goal setting in targeted populations, such as individuals with diabetes. However, we know of no studies that evaluate this type of role for a general primary care population. OBJECTIVE: To assess the implementation and impact of the Community Resource Specialist (CRS) role in Kaiser Permanente Washington. METHODS: We analyzed data from staff interviews, patient focus groups, clinic site visits, patient surveys, the electronic health record, and administrative sources. RESULTS: Satisfaction with CRSs was high, with 92% of survey respondents choosing "very satisfied" or "somewhat satisfied." Of patients with a resource referral and follow-up encounter, 45% reported using the resource (n = 229) and 86% who set a goal and had a follow-up encounter (n = 218) progressed toward their goal. Primary care teams reported workload easing. Patients who used CRSs and participated in focus groups reported behavior changes and improved health, although no changes were detected from electronic health records or patient survey data. Key learnings include the need to clearly define the CRS role, ensure high visibility to clinical staff, and facilitate personal introductions of patients (warm handoffs). CONCLUSION: Adding an individual to the primary care team with expertise in community resources can increase patient satisfaction, support clinicians, and improve patients' perceptions of their health and well-being.

Cervical cancer screening and follow-up in 4 geographically diverse US health care systems, 1998 through 2007.

BACKGROUND: Cervical cancer screening and follow-up guidelines have changed considerably in recent years, but to the authors' knowledge few published reports exist to estimate the impact of these changes in community-based settings. The authors examined the patterns and results of cervical cancer testing and follow-up over a decade in 4 geographically diverse US health care systems to inform the future evaluation of changes resulting from increased uptake of the human papillomavirus (HPV) vaccination. METHODS: The authors studied women aged 21 to 65 years who were members of one of these health systems at any time between 1998 and 2007. Data were collected and standardized across sites, based on receipt of Papanicolaou (Pap) and HPV tests, HPV vaccination, cervical biopsies, and treatment of cervical dysplasia. Annual rates (per 1000 person-years) of Pap testing, HPV testing, and cervical biopsy and treatment procedures were calculated. Screening intervals and trends in the results of screening Pap tests and cervical biopsies also were examined. RESULTS: Pap testing rates decreased (from 483 per 1000 person-years in 2000 to 412 per 1000 person-years in 2007) and HPV testing rates increased over the study period. Screening frequency varied across health care systems, and many women continued to receive annual testing. All 4 sites moved to less frequent screening over the study period without marked changes in the overall use of cervical biopsy or treatment. CONCLUSIONS: Despite differences over time and across health plans in rates of cervical cancer testing and follow-up cervical procedures, the authors found no notable differences in Pap test results, diagnostic or treatment procedure rates, or pathological outcomes. This finding suggests that the longer screening intervals did not lead to more procedures or more cancer diagnoses.

Decision aids for benign prostatic hyperplasia and prostate cancer.

OBJECTIVES: To examine the relationships among implementing decision aids (DAs) for benign prostatic hyperplasia (BPH) and prostate cancer (PRCA), and treatment rates and costs. STUDY DESIGN: A pre-post observational evaluation of a quality improvement initiative in a healthcare system in Washington state. METHODS: Men with BPH seen in urology clinics and all men diagnosed with localized PRCA were identified for an intervention period, in which urologists were instructed to order a DA for every patient with those conditions, and a historical control period. Outcomes were 6-month rates of surgery for BPH, any active treatment (hormone therapy, radiation, or surgery) for PRCA, and total healthcare costs. Results During the intervention, DAs were delivered to 22% of men with recent BPH drug treatment, 24% of men with untreated BPH, and 56% of men with PRCA. DA implementation was associated with a 32% lower rate of surgery among men with treated BPH (rate ratio [RR], 0.68; 95% CI, 0.49-0.94) and a nonsignificant 22% lower rate of surgery among men with previously untreated BPH (RR, 0.78; 95% CI, 0.50-1.22). For PRCA, DA implementation was associated with a 27% lower rate of active treatment (RR, 0.73; 95% CI, 0.57-0.93). We found no significant associations between DA implementation and costs of care for either condition. CONCLUSIONS: Implementing patient DAs was associated with lower rates of elective surgery for previously treated BPH and active treatment for localized PRCA; however, implementation of these DAs was not associated with lower costs of care.

Barriers and facilitators to team-based care in the context of primary care transformation.

The patient-centered medical home model relies on team-based care for meaningful practice transformation. This article adds to the literature on the importance of teams in primary care by exploring the barriers and facilitators to establishing high functioning teams during a patient-centered medical home transformation process.

Changes in office visit use associated with electronic messaging and telephone encounters among patients with diabetes in the PCMH.

PURPOSE: Telephone- and Internet-based communication are increasingly common in primary care, yet there is uncertainty about how these forms of communication affect demand for in-person office visits. We assessed whether use of copay-free secure messaging and telephone encounters was associated with office visit use in a population with diabetes. METHODS: We used an interrupted time series design with a patient-quarter unit of analysis. Secondary data from 2008-2011 spanned 3 periods before, during, and after a patient-centered medical home (PCMH) redesign in an integrated health care delivery system. We used linear regression models to estimate proportional changes in the use of primary care office visits associated with proportional increases in secure messaging and telephone encounters. RESULTS: The study included 18,486 adults with diabetes. The mean quarterly number of primary care contacts increased by 28% between the pre-PCMH baseline and the postimplementation periods, largely driven by increased secure messaging; quarterly office visit use declined by 8%. In adjusted regression analysis, 10% increases in secure message threads and telephone encounters were associated with increases of 1.25% (95% CI, 1.21%-1.29%) and 2.74% (95% CI, 2.70%-2.77%) in office visits, respectively. In an interaction model, proportional increases in secure messaging and telephone encounters remained associated with increased office visit use for all study periods and patient subpopulations (P<.001). CONCLUSIONS: Before and after a medical home redesign, proportional increases in secure messaging and telephone encounters were associated with additional primary care office visits for individuals with diabetes. Our findings provide evidence on how new forms of patient-clinician communication may affect demand for office visits.

Specialty use among patients with treated hypertension in a patient-centered medical home.

BACKGROUND: Little is known about how delivery of primary care in the patient-centered medical home (PCMH) influences outpatient specialty care use. OBJECTIVE: To describe changes in outpatient specialty use among patients with treated hypertension during and after PCMH practice transformation. DESIGN: One-group, 48-month interrupted time series across baseline, PCMH implementation and post-implementation periods. PATIENTS: Adults aged 18-85 years with treated hypertension. INTERVENTION: System-wide PCMH redesign implemented across 26 clinics in an integrated health care delivery system, beginning in January 2009. MAIN MEASURES: Resource Utilization Band variables from the Adjusted Clinical Groups case mix software characterized overall morbidity burden (low, medium, high). Negative binomial regression models described adjusted annual differences in total specialty care visits. Poisson regression models described adjusted annual differences in any use (yes/no) of selected medical and surgical specialties. KEY RESULTS: Compared to baseline, the study population averaged 7% fewer adjusted specialty visits during implementation (P < 0.001) and 4% fewer adjusted specialty visits in the first post-implementation year (P = 0.02). Patients were 12% less likely to have any cardiology visits during implementation and 13% less likely during the first post-implementation year (P < 0.001). In interaction analysis, patients with low morbidity had at least 27% fewer specialty visits during each of 3 years following baseline (P < 0.001); medium morbidity patients had 9% fewer specialty visits during implementation (P < 0.001) and 5% fewer specialty visits during the first post-implementation year (P = 0.007); high morbidity patients had 3% (P = 0.05) and 5% (P = 0.009) higher specialty use during the first and second post-implementation years, respectively. CONCLUSIONS: Results suggest that more comprehensive primary care in this PCMH redesign enabled primary care teams to deliver more hypertension care, and that many needs of low morbidity patients were within the scope of primary care practice. New approaches to care coordination between primary care teams and specialists should prioritize high morbidity, clinically complex patients.

The HMO Research Network Virtual Data Warehouse: A Public Data Model to Support Collaboration.

The HMO Research Network (HMORN) Virtual Data Warehouse (VDW) is a public, non-proprietary, research-focused data model implemented at 17 health care systems across the United States. The HMORN has created a governance structure and specified policies concerning the VDW's content, development, implementation, and quality assurance. Data extracted from the VDW have been used by thousands of studies published in peer-reviewed journal articles. Advances in software supporting care delivery and claims processing and the availability of new data sources have greatly expanded the data available for research, but substantially increased the complexity of data management. The VDW data model incorporates software and data advances to ensure that comprehensive, up-to-date data of known quality are available for research. VDW governance works to accommodate new data and system complexities. This article highlights the HMORN VDW data model, its governance principles, data content, and quality assurance procedures. Our goal is to share the VDW data model and its operations to those wishing to implement a distributed interoperable health care data system.

Outcomes among chronically ill adults in a medical home prototype.

OBJECTIVES: To compare quality, utilization, and cost outcomes for patients with selected chronic illnesses at a patient-centered medical home (PCMH) prototype site with outcomes for patients with the same chronic illnesses at 19 nonintervention control sites. STUDY DESIGN: Nonequivalent pretest-posttest control group design. METHODS: PCMH redesign results were investigated for patients with preexisting diabetes, hypertension, and/or coronary heart disease. Data from automated databases were collected for eligible enrollees in an integrated healthcare delivery system. Multivariable regression models tested for adjusted differences between PCMH patients and controls during the baseline and follow-up periods. Dependent measures under study included clinical processes and, outcomes, monthly healthcare utilization, and costs. RESULTS: Compared with controls over 2 years, patients at the PCMH prototype clinic had slightly better clinical outcome control in coronary heart disease (2.20 mg/dL lower mean low-density lipoprotein cholesterol; P <.001). PCMH patients changed their patterns of primary care utilization, as reflected by 86% more secure electronic message contacts (P <.001), 10% more telephone contacts (P = .003), and 6% fewer in-person primary care visits (P <.001). PCMH patients had 21% fewer ambulatory care-sensitive hospitalizations (P <.001) and 7% fewer total inpatient admissions (P = .002) than controls. During the 2-year redesign, we observed 17% lower inpatient costs (P <.001) and 7% lower total healthcare costs (P <.001) among patients at the PCMH prototype clinic. CONCLUSIONS: A clinic-level population-based PCMH redesign can decrease downstream utilization and reduce total healthcare costs in a subpopulation of patients with common chronic illnesses.

Effects of transitioning from conventional methods to liquid-based methods on unsatisfactory Papanicolaou tests: results from a multicenter US study.

BACKGROUND: Papanicolaou (Pap) testing has transitioned from conventional preparations (CPs) to liquid-based preparations (LBPs) because of the perceived superiority of LBPs. Many studies conclude that LBPs reduce unsatisfactory Pap tests; however, some believe that the evidence substantiating this claim is weak. The authors studied the effect of the transition from CPs to LBPs on the proportion of unsatisfactory Pap tests in 4 health care systems in the United States participating in the National Institutes of Health-funded Screening Effectiveness and Research in Community-Based Healthcare (SEARCH) project. METHODS: The study cohort consisted of 548,174 women ages 21 to 65 years who had 1443,725 total Pap tests between 2000 and 2010. Segmented regression analysis was used to estimate the effect of adopting LBPs on the proportion of unsatisfactory Pap tests after adjusting for age. RESULTS: Three sites that implemented SurePath LBP experienced significant reductions in unsatisfactory Pap tests (estimated effect: site 1, -2.46%; 95% confidence interval [CI], -1.47%, -3.45%; site 2, -1.78%; 95% CI, -1.54%, -2.02%; site 3, -8.25%; 95% CI, -7.33%, -9.17%). The fourth site that implemented ThinPrep LBP did not experience a reduction in unsatisfactory Pap tests. The relative risk of an unsatisfactory Pap test in women aged ≥ 50 years increased after the transition to LBPs (SurePath: relative risk, 2.1; 95% CI, 1.9-2.2; ThinPrep: relative risk, 1.7; 95% CI, 1.5-2.0). CONCLUSIONS: The observed changes in the proportion of unsatisfactory Pap tests varied across the participating sites and depended on the type of LBP technology, the age of women, and the rates before the implementation of this technology.

Spreading a medical home redesign: effects on emergency department use and hospital admissions.

PURPOSE: The patient-centered medical home (PCMH) is being rapidly deployed in many settings to strengthen US primary care, improve quality, and control costs; however, evidence supporting this transformation is still lacking. We describe the Group Health experience in attempting to replicate the effects on health care use seen in a PCMH prototype clinic via a systemwide spread using Lean as the change strategy. METHODS: We used an interrupted time series analysis with a patient-month unit of analysis over a 4-year period that included baseline, implementation, and stabilization periods for 412,943 patients. To account for secular trends across these periods, we compared changes in use of face-to-face primary care visits, emergency department visits, and inpatient admissions with those of a nonequivalent comparison group of patients served by community network practices. RESULTS: After accounting for secular trends among network patients, patients empaneled to the PCMH clinics had 5.1% and 6.7% declines in primary care office visits in early and later stabilization years, respectively, after the implementation year. This trend was accompanied by a 123% increase in the use of secure electronic message threads and a 20% increase in telephone encounters. Declines were also seen in emergency department visits at 1 and 2 years (13.7% and 18.5%) compared with what would be expected based on secular trends in network practices. No statistically significant changes were found for hospital admissions. CONCLUSIONS: The Group Health experience shows it is possible to reduce emergency department use with PCMH transformation across a diverse set of clinics using a clear change strategy (Lean) and sufficient resources and supports.

Development of a diagnostic test set to assess agreement in breast pathology: practical application of the Guidelines for Reporting Reliability and Agreement Studies (GRRAS).

BACKGROUND: Diagnostic test sets are a valuable research tool that contributes importantly to the validity and reliability of studies that assess agreement in breast pathology. In order to fully understand the strengths and weaknesses of any agreement and reliability study, however, the methods should be fully reported. In this paper we provide a step-by-step description of the methods used to create four complex test sets for a study of diagnostic agreement among pathologists interpreting breast biopsy specimens. We use the newly developed Guidelines for Reporting Reliability and Agreement Studies (GRRAS) as a basis to report these methods. METHODS: Breast tissue biopsies were selected from the National Cancer Institute-funded Breast Cancer Surveillance Consortium sites. We used a random sampling stratified according to woman's age (40-49 vs. ≥50), parenchymal breast density (low vs. high) and interpretation of the original pathologist. A 3-member panel of expert breast pathologists first independently interpreted each case using five primary diagnostic categories (non-proliferative changes, proliferative changes without atypia, atypical ductal hyperplasia, ductal carcinoma in situ, and invasive carcinoma). When the experts did not unanimously agree on a case diagnosis a modified Delphi method was used to determine the reference standard consensus diagnosis. The final test cases were stratified and randomly assigned into one of four unique test sets. CONCLUSIONS: We found GRRAS recommendations to be very useful in reporting diagnostic test set development and recommend inclusion of two additional criteria: 1) characterizing the study population and 2) describing the methods for reference diagnosis, when applicable.

Spreading a patient-centered medical home redesign: a case study.

Health care leaders and policymakers are turning to the patient-centered medical home (PCMH) model to contain costs, improve the quality of care, and create a more positive primary care work environment. We describe how Group Health, an integrated delivery system, developed and implemented a PCMH intervention that included standardized structural and practice level changes. This intervention was spread to a diverse set of 26 primary care practices in 14 months using Lean Management principles. Group Health's experience provides valuable insights that can be used to improve the design and implementation of future PCMH models.

Impact on seniors of the patient-centered medical home: evidence from a pilot study.

PURPOSE: To assess the impact on health care cost and quality among seniors of a patient-centered medical home (PCMH) pilot at Group Health Cooperative, an integrated health care system in Washington State. DESIGN AND METHODS: A prospective before-and-after evaluation of the experience of seniors receiving primary care services at 1 pilot clinic compared with seniors enrolled at the remaining 19 primary care clinics owned and operated by Group Health. Analyses of secondary data on quality and cost were conducted for 1,947 seniors in the PCMH clinic and 39,396 seniors in the 19 control clinics. Patient experience with care was based on survey data collected from 487 seniors in the PCMH clinic and of 668 in 2 specific control clinics that were selected for their similarities in organization and patient composition to the pilot clinic. RESULTS: After adjusting for baseline, seniors in the PCMH clinic reported higher ratings than controls on 3 of 7 patient experience scales. Seniors in the PCMH clinic had significantly greater quality outcomes over time, but this difference was not significant relative to control. PCMH patients used more e-mail, phone, and specialist visits but fewer emergency services and inpatient admissions for ambulatory care sensitive conditions. At 1 and 2 years, the PCMH and control clinics did not differ significantly in overall costs. IMPLICATIONS: A PCMH redesign can be associated with improvements in patient experience and quality without increasing overall cost.

Implications of reassigning patients for the medical home: a case study.

PURPOSE: Improving patient-doctor continuity is one goal of the medical home, but achieving this goal may require physicians to reduce panel size. This article examines the impact on patient experience and utilization of Group Health Cooperative's process of reassigning patients to new physicians as part of their medical home demonstration project. METHODS: This work represents a subanalysis of the Group Health medical home pilot evaluation. Study participants include 8,005 adults who received primary care in 2006 and 2007 at an urban practice owned and operated by a not-for-profit integrated delivery system. Approximately one-quarter of patients were selected to be reassigned to a new physician. Primary care, emergency department, secure messaging, and telephone utilization were captured through automated sources. Patients' experience was measured before and after implementation of the medical home for a subset of 1,098 patients. RESULTS: Patients who were retained by their existing physicians were older, sicker, and had longer preexisting patient-doctor relationships. After reassignment, reassigned patients were less likely to use primary care services but equally likely to use the emergency department. They were no less satisfied with their care experience. CONCLUSIONS: Informational and managerial continuity may mitigate deleterious effects of reassignment, but more must be done to actively bind reassigned patients to the medical home to improve relational continuity with younger, healthier patients.

Implementing group medical visits for older adults at group health cooperative.

In a pair of randomized controlled trials in the Kaiser Permanente delivery system in Colorado in the 1990s, group visits for older adults (monthly non-disease-specific group medical appointments for a cohort of patients led by primary care teams) were proven to reduce costs, decrease hospitalizations, and improve patient and provider satisfaction. As part of a translational effort, this group visit intervention was replicated in a delivery system in Seattle, Washington, and the log of total healthcare costs was measured in the first year of the intervention. Utilization and patient and physician satisfaction were secondary outcomes. For the cost and utilization analysis, a retrospective case-control design compared 221 case patients aged 65 and older with high outpatient usage in the previous 18 months with 1,015 control patients selected randomly from clinics not participating in the intervention. Controls were matched to cases on the number of primary care visits in the prior 18 months. Total costs were not statistically different for intervention patients and controls ($8,845 vs $10,288, P=.11), nor were there statistically significant differences in utilization, including hospital admissions and outpatient visits, but patient and provider satisfaction with the intervention was high. This translational effort did not demonstrate the cost savings of the original efficacy trials. Possible explanations for these divergent results may have to do with differences between those who participated and differences between the two delivery systems.

Patient-centered medical home demonstration: a prospective, quasi-experimental, before and after evaluation.

BACKGROUND: A patient-centered medical home (PCMH) demonstration was undertaken at 1 healthcare system, with the goals of improving patient experience, lessening staff burnout, improving quality, and reducing downstream costs. Five design principles guided development of the PCMH changes to staffing, scheduling, point-of-care, outreach, and management. OBJECTIVE: To report differences in patient experience, staff burnout, quality, utilization, and costs in the first year of the PCMH demonstration. STUDY DESIGN: Prospective before and after evaluation. METHODS: Baseline (2006) and 12-month (2007) measures were compared. Patient and staff experiences were measured using surveys from a random sample of patients and all staff at the PCMH and 2 control clinics. Automated data were used to measure and compare change components, quality, utilization, and costs for PCMH enrollees versus enrollees at 19 other clinics. Analyses included multivariate regressions for the different outcomes to account for baseline case mix. RESULTS: After adjusting for baseline, PCMH patients reported higher ratings than controls on 6 of 7 patient experience scales. For staff burnout, 10% of PCMH staff reported high emotional exhaustion at 12 months compared with 30% of controls, despite similar rates at baseline. PCMH patients also had gains in composite quality between 1.2% and 1.6% greater than those of other patients. PCMH patients used more e-mail, phone, and specialist visits, but fewer emergency services. At 12 months, there were no significant differences in overall costs. CONCLUSIONS: A PCMH redesign can be associated with improvements in patient experience, clinician burnout, and quality without increasing overall cost.